[INFO] fetching crate kobold_qr 0.9.0...
[INFO] checking kobold_qr-0.9.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate kobold_qr 0.9.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate kobold_qr 0.9.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kobold_qr 0.9.0
[INFO] finished tweaking crates.io crate kobold_qr 0.9.0
[INFO] tweaked toml for crates.io crate kobold_qr 0.9.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages
[INFO] [stderr]       Adding fast_qr v0.8.6 (latest: v0.12.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kobold_macros v0.9.0
[INFO] [stderr]   Downloaded kobold v0.9.1
[INFO] [stderr]   Downloaded fast_qr v0.8.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f554f36877ee9d7392b727907859d049364ea7ee84e12f29d512e1cfff642a9
[INFO] running `Command { std: "docker" "start" "-a" "3f554f36877ee9d7392b727907859d049364ea7ee84e12f29d512e1cfff642a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f554f36877ee9d7392b727907859d049364ea7ee84e12f29d512e1cfff642a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f554f36877ee9d7392b727907859d049364ea7ee84e12f29d512e1cfff642a9", kill_on_drop: false }`
[INFO] [stdout] 3f554f36877ee9d7392b727907859d049364ea7ee84e12f29d512e1cfff642a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1010931f08bd63e8c29ef000b221a1709fb1f96ed3ac4abb6677bac83c79a48b
[INFO] running `Command { std: "docker" "start" "-a" "1010931f08bd63e8c29ef000b221a1709fb1f96ed3ac4abb6677bac83c79a48b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]     Checking fast_qr v0.8.6
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.42
[INFO] [stderr]     Checking web-sys v0.3.69
[INFO] [stderr]    Compiling kobold_macros v0.9.0
[INFO] [stderr]     Checking kobold v0.9.1
[INFO] [stderr]     Checking kobold_qr v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.95s
[INFO] running `Command { std: "docker" "inspect" "1010931f08bd63e8c29ef000b221a1709fb1f96ed3ac4abb6677bac83c79a48b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1010931f08bd63e8c29ef000b221a1709fb1f96ed3ac4abb6677bac83c79a48b", kill_on_drop: false }`
[INFO] [stdout] 1010931f08bd63e8c29ef000b221a1709fb1f96ed3ac4abb6677bac83c79a48b
[INFO] checking kobold_qr-0.9.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate kobold_qr 0.9.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate kobold_qr 0.9.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kobold_qr 0.9.0
[INFO] finished tweaking crates.io crate kobold_qr 0.9.0
[INFO] tweaked toml for crates.io crate kobold_qr 0.9.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages
[INFO] [stderr]       Adding fast_qr v0.8.6 (latest: v0.12.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91d5591bc50f60379b43319a4feb1e653905684e095c6919b18994b8965347c1
[INFO] running `Command { std: "docker" "start" "-a" "91d5591bc50f60379b43319a4feb1e653905684e095c6919b18994b8965347c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91d5591bc50f60379b43319a4feb1e653905684e095c6919b18994b8965347c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91d5591bc50f60379b43319a4feb1e653905684e095c6919b18994b8965347c1", kill_on_drop: false }`
[INFO] [stdout] 91d5591bc50f60379b43319a4feb1e653905684e095c6919b18994b8965347c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03c3c75a12d5c162a92ac243c451856b8be4db3f051d6bc0d57ba660dc96b1e0
[INFO] running `Command { std: "docker" "start" "-a" "03c3c75a12d5c162a92ac243c451856b8be4db3f051d6bc0d57ba660dc96b1e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking fast_qr v0.8.6
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.42
[INFO] [stderr]     Checking web-sys v0.3.69
[INFO] [stderr]    Compiling kobold_macros v0.9.0
[INFO] [stderr]     Checking kobold v0.9.1
[INFO] [stderr]     Checking kobold_qr v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.52s
[INFO] running `Command { std: "docker" "inspect" "03c3c75a12d5c162a92ac243c451856b8be4db3f051d6bc0d57ba660dc96b1e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03c3c75a12d5c162a92ac243c451856b8be4db3f051d6bc0d57ba660dc96b1e0", kill_on_drop: false }`
[INFO] [stdout] 03c3c75a12d5c162a92ac243c451856b8be4db3f051d6bc0d57ba660dc96b1e0